c636c6a55b
Add lints to detect floating point computations that are either inaccurate or inefficient and suggest better alternatives.
175 lines
6.3 KiB
Plaintext
175 lines
6.3 KiB
Plaintext
error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:12:13
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LL | let _ = x.log(2f32);
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| ^^^^^^^^^^^ help: consider using: `x.log2()`
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= note: `-D clippy::inaccurate-floating-point-computation` implied by `-D warnings`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:13:13
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LL | let _ = x.log(10f32);
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| ^^^^^^^^^^^^ help: consider using: `x.log10()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:14:13
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LL | let _ = x.log(std::f32::consts::E);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.ln()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:15:13
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LL | let _ = x.log(TWO);
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| ^^^^^^^^^^ help: consider using: `x.log2()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:16:13
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LL | let _ = x.log(E);
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| ^^^^^^^^ help: consider using: `x.ln()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:19:13
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LL | let _ = x.log(2f64);
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| ^^^^^^^^^^^ help: consider using: `x.log2()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:20:13
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LL | let _ = x.log(10f64);
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| ^^^^^^^^^^^^ help: consider using: `x.log10()`
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error: logarithm for bases 2, 10 and e can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:21:13
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LL | let _ = x.log(std::f64::consts::E);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.ln()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:26:13
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LL | let _ = (1.0 + x).ln();
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| ^^^^^^^^^^^^^^ help: consider using: `x.ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:27:13
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LL | let _ = (1.0 + x * 2.0).ln();
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| ^^^^^^^^^^^^^^^^^^^^ help: consider using: `(x * 2.0).ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:28:13
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LL | let _ = (1.0 + x.powi(2)).ln();
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| ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.powi(2).ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:29:13
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LL | let _ = (1.0 + x.powi(2) * 2.0).ln();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(x.powi(2) * 2.0).ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:30:13
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LL | let _ = (1.0 + (std::f32::consts::E - 1.0)).ln();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `((std::f32::consts::E - 1.0)).ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:37:13
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LL | let _ = (1.0 + x).ln();
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| ^^^^^^^^^^^^^^ help: consider using: `x.ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:38:13
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LL | let _ = (1.0 + x * 2.0).ln();
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| ^^^^^^^^^^^^^^^^^^^^ help: consider using: `(x * 2.0).ln_1p()`
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error: ln(1 + x) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:39:13
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LL | let _ = (1.0 + x.powi(2)).ln();
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| ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.powi(2).ln_1p()`
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error: exponent for bases 2 and e can be computed more efficiently
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--> $DIR/floating_point_arithmetic.rs:48:13
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LL | let _ = 2f32.powf(x);
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| ^^^^^^^^^^^^ help: consider using: `x.exp2()`
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= note: `-D clippy::slow-floating-point-computation` implied by `-D warnings`
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error: exponent for bases 2 and e can be computed more efficiently
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--> $DIR/floating_point_arithmetic.rs:49:13
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LL | let _ = std::f32::consts::E.powf(x);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.exp()`
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error: square-root of a number can be computer more efficiently
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--> $DIR/floating_point_arithmetic.rs:50:13
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LL | let _ = x.powf(1.0 / 2.0);
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| ^^^^^^^^^^^^^^^^^ help: consider using: `x.sqrt()`
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error: cube-root of a number can be computer more efficiently
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--> $DIR/floating_point_arithmetic.rs:51:13
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LL | let _ = x.powf(1.0 / 3.0);
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| ^^^^^^^^^^^^^^^^^ help: consider using: `x.cbrt()`
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error: exponent for bases 2 and e can be computed more efficiently
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--> $DIR/floating_point_arithmetic.rs:54:13
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LL | let _ = 2f64.powf(x);
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| ^^^^^^^^^^^^ help: consider using: `x.exp2()`
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error: exponent for bases 2 and e can be computed more efficiently
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--> $DIR/floating_point_arithmetic.rs:55:13
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LL | let _ = std::f64::consts::E.powf(x);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.exp()`
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error: square-root of a number can be computer more efficiently
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--> $DIR/floating_point_arithmetic.rs:56:13
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LL | let _ = x.powf(1.0 / 2.0);
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| ^^^^^^^^^^^^^^^^^ help: consider using: `x.sqrt()`
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error: cube-root of a number can be computer more efficiently
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--> $DIR/floating_point_arithmetic.rs:57:13
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LL | let _ = x.powf(1.0 / 3.0);
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| ^^^^^^^^^^^^^^^^^ help: consider using: `x.cbrt()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:62:13
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LL | let _ = x.exp() - 1.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:63:13
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LL | let _ = x.exp() - 1.0 + 2.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:69:13
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LL | let _ = x.exp() - 1.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_arithmetic.rs:70:13
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LL | let _ = x.exp() - 1.0 + 2.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: aborting due to 28 previous errors
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